package chapter04.Example16;
//定义类Animal
class Animal{
    public void shout (){
        System.out.println("喵喵喵....");
    }
}
//Dog类
class Dog extends Animal {
    //重写shout()方法
    public void shout(){
        System.out.println("汪汪汪....");
    }
    public void eat(){
        System.out.println("吃骨头...");
    }
}
//定义测试类
public class Example16 {
    public static void main (String[] args){
        Animal an = new Dog();   //此时发生了向上转型，子类>父类
        Dog dog = new Dog();    //此时发生了向下转型
        dog.shout();
        dog.eat();
    }
}
